Syringe



(NoModel.) y

. CT. H. BRINTON.

- SYRINGE. No. 351,736. Patented Nov. 2, 1886.

v 55 @Heimat UNITED STATES 'PATENT (Dariena GEORGE H. BRINTON, OF PHILADELPHIA, PENNSYLVANIA.

SYRINGE.

SPECIFICATION forming part of Letters? Patent No. 351,736, dated November 2,71886.

Application filed May 7, 1886.

To aZZ whom it may concern,.- p

' Be it known that I, GEORGE H. BRINroN, a citizen of the United States, residing at the city of Philadelphia, in the State of Pennsylvania, have invented anew and useful Syringe, of which the following is a specification.

This invention relates to asyringe in which the piston-head ina-y be connected with and disconnected from the piston-rod at the will of the operator; and the object of Vmy invention is to .so construct the syringe that it may be used for the purpose of carrying the liquid Within the syringe, and thereby dispense with the bottle or other receptacle ordinarily used for that purpose, which Aobject I accomplish by means of the-mechanism illustrated in the accompanying drawing, in Which- The figure shows a longitudinal sectional View of a syringe constructed in accordance with my invention.

In the drawing, A represents the shell or case, which maybe made of any suitable material, and is constructed in the ordinary inanner.

D is the piston rod or stein.

F is the piston-head,which head is provided with the packing G. It is also provided with the screw-thread E.

B, is a screw-thread upon the pistonrod, made of suitable size to engage with the screw thread E. t

C is the end of the pist-on-rod, which may be constructed S0 as to form a cork or stopper for the small end of the syringe.

In filling the syringewith liquid the pistonrod D is drawn back until the screw Bis brought in contact with the screw-thread E, when the piston-rod is turned to the right, engaging the screw-thread B with the. screw-threads E,

thereby attaching the piston-head to the piston stem or rod. The piston-head is then carried to the end of the syringe-tube near the tip. The tipvbeingplaced in the liquid, the

piston-head is drawn back to the other end of the cylinder o'r tube with the liquid. By turning the piston-rod to the left the screw-thread Serial No. 201,489. (No model.)

B disengages from the screw E in the pistonliead. rIhe piston-rod is again pushed forward toward the point or tip ofthe syringe until the part C entirely closes the opening. This leaves the syringe filled with liquid between the piston-head F, which is at the butt or upper end of the syringe, and the cork or stopper C, which is at the lower or point end of the syringe. The piston-head being packed both atits periphery,where it comes in contact with the case, and around the pistoirrod at G, retains or prevents the liquid from esper C prevents it from escaping at the other. end of the syringe. In this Way the liquid can be carried in the syringe for any length of `time desired, and Whenever the operator dedispensed within some cases, if desired7 as the liquid would not escape to any extent in case the point of the syringe was kept uppermost. Having thus described my invention, what I claim to have invented, and desire to secure by Letters Patent, is-

Ina syringe, the combination of the pistonrod D, a detachable head, F, provided with a screw-thread, E, and the cork or stopper C, provided with the screw-thread B, to engage the screw-thread E, said stopper O adapted to prevent the liquid from escaping at the tip end of the syringe, and said piston-head F adapted to prevent the liquid from escaping at the other lend of the syringe, substantially as described. I

eno. H. BRrNToN.

Vi tn'essos ARTHUR G. DENsoN, EDWARD B. Esoorr.

caping at one end of the syringe, and the ston- 

